Standardize format in Logger and add Verbose level

I kind of want verbose level now as I want to know which files got
included.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/run.rs b/src/run.rs
index 097ace3..c276d7c 100644
--- a/src/run.rs
+++ b/src/run.rs
@@ -39,7 +39,7 @@ pub fn run<R: Read, W: Write>(
         let normalized_path = normalizer.normalize(path)?;
         if !seen_paths.insert(normalized_path.relative.clone()) {
             logger.warn(format!(
-                "Warning: skipping duplicate file: {}",
+                "skipping duplicate file: {}",
                 display_path(&normalized_path.relative)
             ));
             continue;